Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Internet
Explorer\Help_Menu_Urls
Name: Online_Support
Type: REG_SZ
Value: "http://supportsiteofyourchoice.org"
This tip applies to all versions of Internet Explorer. A very similar setting involves the default Internet Explorer search page which you access via the the "Search" toolbar button. To change the default search site:
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Internet
Explorer\Main
Name: Search Bar
Type: REG_SZ
Value: "http://searchsiteofyourchoice.org"